Oilpan: Prepare moving InspectorFrontendHost to Oilpan

Source/core/inspector/InspectorFrontendHost.cpp

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 113 matching lines @@
     , m_menuProvider(0)
 {
     ScriptWrappable::init(this);
 }
 
 InspectorFrontendHost::~InspectorFrontendHost()
 {
     ASSERT(!m_client);
 }
 
+void InspectorFrontendHost::trace(Visitor* visitor)
+{
+    visitor->trace(m_frontendPage);
+}
+
 void InspectorFrontendHost::disconnectClient()
 {
     m_client = 0;
     if (m_menuProvider)
         m_menuProvider->disconnect();
-    m_frontendPage = 0;
+    m_frontendPage = nullptr;
 }
 
 void InspectorFrontendHost::setZoomFactor(float zoom)
 {
     m_frontendPage->deprecatedLocalMainFrame()->setPageAndTextZoomFactors(zoom, 1);
 }
 
 float InspectorFrontendHost::zoomFactor()
 {
     return m_frontendPage->deprecatedLocalMainFrame()->pageZoomFactor();
@@ skipping 95 matching lines @@
 {
     return m_client && m_client->isUnderTest();
 }
 
 bool InspectorFrontendHost::isHostedMode()
 {
     return false;
 }
 
 } // namespace blink